Prong buckle



J. SALISBURY Oct. 21, 1930.

PRONG BUCKLE Filed June 28, 1929 INvE TEIFR JEssLn- SALISBURY *UNITED STATES J'ESSUIP SALISBURY, or HAMDEN, ooivnncrrdtrnnssrenon 'ro wss me cimmxm COMPANY, 01' wnsr HAVEN, oonnnorrcnr, n conronn'rro v or oonNEcrIo 'r PRONG Beams Application filed June 28,

This invention relates to prong buckles having means for protecting the prong points, the buckle being employed for adusting the length of straps and maintaining the adjusted length by penetrating the strap material.

The objects of the invention are'to provide vunderstood by reference to one illustrative device embodying the invention and illustrated by the several figures in the accompanying drawing in which the Figure 1 is an elevation of the buckle with protected prong points; the Figure 2 is asimilar elevation, but with prong points visible; and the Figure 3 is a section on the line3-3 of the Figure 1. v

The invention is not limited to any specific form of construction and the details of the device may bevaried to produce the novel features hereinafter claimed, the device as illustrated, however, is a buckle comprising the frame member 1 and the prong member 2 assembled for relatively sliding with means provided for the protection of the prong points. The two members of the buckle are 1 each preferably formed of resilient wire. A

2 middle portion of the wire of which the frame member is constructed is flattened in the plane of the frame substantiallyjthroughout such middle portion, the flattened portion 3 being bent to form the spaced arched sections 4:, the remaining end'portions of the wire being bent to provide the two side arms 5 of the frame member, the wire extremities be- 7 ing bent inwardly in parallel relation to the portion 3 and providing looped ends 6, each snugly positioned against its respective side arm 5. A middle portion of the wire of 1929'; Serial iv 0.: 374,392.

which-ntheprong 2 V bent-toform the loop 7 rhavingthelowerlbar 8-and the bar portions 9 turned back in'=the plane'of theloop :and bent away from the loopto provide the side arms'10 Which are' ofi-set inwardly to provide the spaced prongs 11.; 'Depressions 12 are provided 'in thein ner surface of each of theside arms 10. :The two members of the device are assembled by meansof the looped ends6 ofthe frame memberjbeing looped aroundithe side arms 10 0f the prong member in, such manner that'the side arms 10 are held outwardlyunder lateral tejnsion'sothat; wherrthe relatively sliding members are in the position illustrated by the Figures 1 and 3 the side constructions, of which the side arms 10 are parts, spring wardly by reason'of depressed portions of the arms 10slidingwithin the loops 6 of the side arms 5 of the frame member, thus locking the members in'such position wherein the prong points 11A are protected within the spaced arched sections 4. 7 When the relative sliding members are moved to the position illustrated'by the Figure 2 the prong point/s 11A are withdrawn from their protecting arched coverings and the side constructions of the prong member are held under increased lateral tension by reason of the full formation of the side arms 10' sliding within the loops 6. The prong points 11A are made outwardly eccentrlc, as regards the axis of each prong, so that they penetrate the strap material at relative points farther apart to adapt the strap to co-operate with the released tension upon the side constructions of the prong member as the relatively sliding members reach the locked position and the strap punc- I,

tures are centered upon the prongs. The buckle is manually operated from one position to the other.

I claim 1. A prong buckle comprising a prongmem ber; prongs provided by, and substantially lying in the plane of, the member; a prong point provided by each prong, the pointbeing eccentric to theaxis' of the prong; a frame member, the members being assembled for a limited relativesliding movement; and means I provided the frame member for protecting the-prong points.

2. A prong buckle comprising a prong I member; prongsprovided by, and substantiill) ally lying in the plane of the members; a frame. member, themembers being assembled for a limited relatiyesliding movement; and

means carried by the frame for protectingthe... prong points, said means comprising a flat tened portion of the frame member, the flat e nt to form arched s'ections- (thereof registering with and admitting tt v offthermemb'er; a de p'ression provided an inner facirig zportion of each arm';- a frame member normally imounted upon the de' pressed portions of' the arms-for a limited relative slidingmov'ement only byoutwardly tensioning the arms; and meanscarried by the frame member for protecting theprong points, said meansnomprising a flattened portionof the hamemember, the fi'atp'ort-ion being bent :to 'formsp'aced arched sections thereof "registering with andadmi'tti-ng the prongpoints. V g V JESSUPSAEIS'BIJRY 

